- Acrylic was used for visibility; Thickness isn't critical but use at least 0.25" thick material for stability; I used 0.33" acrylic that I had leftover from another job

- The upper portion is attached to the Z-slide via a 2" piece of aluminum angle

- The lower portion is attached to the top via 6X 10mm neodymium magnets epoxied into the milled recesses; Double check your polarity before you glue those magnets in!

- There is also a semi-circular front to the lower shoe that I haven't attached yet; I am going to use short pieces of brass rod epoxied into the semi-circle with matching holes drilled into the lower shoe so it is removable